气候变化领域集成服务门户(CCPortal): Different response of alpine meadow and alpine steppe to climatic and anthropogenic disturbance on the Qinghai-Tibetan Plateau

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DOI	10.1016/j.gecco.2021.e01512
	Different response of alpine meadow and alpine steppe to climatic and anthropogenic disturbance on the Qinghai-Tibetan Plateau
	Hao, Aihua; Duan, Hanchen; Wang, Xufeng; You, Quangang; Peng, Fei; Du, Heqiang; Zhao, Guohui; Liu, Feiyao; Li, Chengyang; Lai, Chimin; Xue, Xian
通讯作者	Xue, X (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	2351-9894
卷号	27
英文摘要	Climate change and anthropogenic disturbance are two main drivers for vegetation dynamics on the Qinghai-Tibetan Plateau (QTP). Alpine meadow and alpine steppe are the primary rangeland ecosystem types on the QTP. However, the vegetation trends of the two land cover types and the underlying mechanisms behind their variation remain under debate. In this study, we used Global Inventory Modeling and Mapping Studies (GIMMS) 3g Normalized Difference Vegetation Index (NDVI) (i.e., GIMMS NDVI3g) by coupling the Breaks for Additive Season and Trend (BFAST) model and the Boosted Regression Tree (BRT) model to analyze alpine meadow and alpine steppe vegetation trends on the QTP between 1982 and 2015. We also assessed vegetation variation response to climatic and anthropogenic indicators in conjunction with climatic and human footprint datasets. Results show that growing season NDVI (GSNDVI) values increased overall for both alpine meadow (0.0001 year-1, p = 0.33) and alpine steppe (0.0002 year-1, p < 0.05) throughout 1982-2015. Significant greening trends in both alpine meadow (0.0007 year-1; p < 0.05) and alpine steppe (0.0005 year-1; p < 0.05) ecosystems were obtained before 1998 and 2001, respectively. However, browning trends ascertained by GSNDVI (-0.0006 year-1; p = 0.12) in alpine meadows were observed throughout 1998-2015, while greening trends ascertained by GSNDVI (0.0002 year-1; p = 0.12) in alpine steppes were observed throughout during 2001-2015. Opposing trends in precipitation, solar radiation, and the Standardized Precipitation Evapotranspiration Index (SPEI) occurred before and after breakpoints in both ecosystems. For the alpine meadow ecosystem, adverse precipitation trends caused browning before 1998 followed by greening after 1998 in the Three-RiverSource National Park (TNP). Conversely, opposing changes in precipitation, solar radiation, and SPEI resulted in greening before 1998 followed by browning after 1998 in southern Tibet and the southeastern QTP. Alpine meadow vegetation trends were generally dominated by solar radiation before 1998 and jointly by precipitation and solar radiation after 1998. Prior to 2001 variation in alpine steppe greenness was controlled by precipitation, while after 2001 solar radiation dominated. Along with an increase in human footprint pressure (HFP) gradients, greenness trends gradually increased before 1998 but reversed after 1998 in the alpine meadow ecosystem. Additionally, greenness trends gradually decreased before 2001 but remained unchanged after 2001 for the alpine steppe ecosystem. These results highlight the different effects that climate change and anthropogenic disturbances have had on alpine meadow and alpine steppe ecosystems on the QTP over different time frames. (c) 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
关键词	3-RIVER SOURCE REGION NDVI TIME-SERIES VEGETATION DYNAMICS DRIVING FORCES GRASSLAND TRENDS PATTERNS IMPACTS GIMMS DEGRADATION
英文关键词	NDVI; Vegetation variation; Climate change; Anthropogenic disturbance; Qinghai-Tibetan Plateau
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology
WOS记录号	WOS:000663455000011
来源期刊	GLOBAL ECOLOGY AND CONSERVATION
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/253821
作者单位	[Hao, Aihua; Duan, Hanchen; You, Quangang; Peng, Fei; Du, Heqiang; Liu, Feiyao; Li, Chengyang; Lai, Chimin; Xue, Xian] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China; [Hao, Aihua; Liu, Feiyao; Li, Chengyang; Lai, Chimin] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Wang, Xufeng] Chinese Acad Sci, Cold & Arid Regions Environm & Engn Res Inst, Heihe Remote Sensing Expt Res Stn, Key Lab Remote Sensing Gansu Prov, Lanzhou 730000, Peoples R China; [Wang, Xufeng] Univ New Hampshire, Earth Syst Res Ctr, Inst Study Earth Oceans & Space, Durham, NH 03824 USA; [Zhao, Guohui] Chinese Acad Sci, Sci Big Data Ctr Cold & Arid Reg, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Peng, Fei] Tottori Univ, Arid Land Res Ctr, Int Platform Dryland Res & Educ, Hamasaka 1390, Tottori 6800001, Japan
推荐引用方式 GB/T 7714	Hao, Aihua,Duan, Hanchen,Wang, Xufeng,et al. Different response of alpine meadow and alpine steppe to climatic and anthropogenic disturbance on the Qinghai-Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,27.
APA	Hao, Aihua.,Duan, Hanchen.,Wang, Xufeng.,You, Quangang.,Peng, Fei.,...&Xue, Xian.(2021).Different response of alpine meadow and alpine steppe to climatic and anthropogenic disturbance on the Qinghai-Tibetan Plateau.GLOBAL ECOLOGY AND CONSERVATION,27.
MLA	Hao, Aihua,et al."Different response of alpine meadow and alpine steppe to climatic and anthropogenic disturbance on the Qinghai-Tibetan Plateau".GLOBAL ECOLOGY AND CONSERVATION 27(2021).